<div class="pf-c-progress__description{{#if progress-description--modifier}} {{progress-description--modifier}}{{/if}}"
  {{~#if progress__id}}
    id="{{progress__id}}-description"
  {{/if}}
  {{#if progress-description--attribute}}
    {{{progress-description--attribute}}}
  {{/if}}>
  {{#unless progress--no-description}}
    {{progress__description}}
  {{/unless}}
</div>
